L-Valine
CP2015 ( Injection Grade )
EP8
AJI92
USP24
USP38
High Purity
Assay
≥98.5%
98.5-101.0%
99.0-100.5%
98.5-101.5%
98.5-101.5%
≥98.5%
PH
5.5-6.5
/
5.5-6.5
5.5-7.0
5.5-7.0
/
Specific rotation[a]D20
+26.6°-+28.8°
+26.5°-+29.0°
+27.6°-+29.0°
/
/
+26.6°-+28.8°
Specific rotation[a]D25
/
/
/
+26.6°-+28.8°
+26.6°-+28.8°
/
Transmittance(T430)
≥98.0%
clear & colorless ≤BY6
≥98.0%
/
/
≥98.0%
Chloride(Cl)
≤0.02%
≤0.02%
≤0.02%
≤0.05%
≤0.05%
/
Ammonium(NH4)
≤0.02%
≤0.02%
≤0.02%
/
/
Sulfate(SO4)
≤0.03%
≤0.03%
≤0.02%
≤0.03%
≤0.03%
/
Iron(Fe)
≤10PPM
≤10PPM
≤10PPM
≤30PPM
≤30PPM
/
Heavy metals(Pb)
≤10PPM
≤10PPM
≤10PPM
≤15PPM
≤15PPM
/
Arsenic
≤1PPM
/
≤1PPM
/
/
/
Other amino acids
≤0.5%
/
conforms
/
individual impurities≤0.5% total impurities≤2.0%
individual impurities≤0.2% total impurities≤1.0%
Ninhydrin-positive substances
/
conform
/
/
/
/
Loss on drying
≤0.20%
≤0.50%
≤0.20%
≤0.30%
≤0.30%
≤0.07%
Residue on ignition
≤0.10%
≤0.10%
≤0.10%
≤0.10%
≤0.10%
/
Organic volatile impurities
/
/
/
conform
/
/
Endotoxin
<20EU/g
/
/
/
/
/